*{
    padding: 0;
    margin: 0;
}
.yanjing{
    width: 100%;
    height:50px;
    background: gainsboro;
    text-align: center;
    color: grey;
    line-height: 50px;
    font-size:20px;
}
.yanImg{
    width:100%;
    background: gainsboro;
}
.yanImg::after{
    content: "";
    display: block;
    clear: both;
}
.yanImg{
    zoom: 1;
}
.imgDiv{
    width:48%;
    margin-left: 1%;
    margin-right: 1%;
    margin-bottom:5px;
    text-align: center;
    float: left;
    background: white;
}
.divImg{
    width:100%;
}